Question: What was DeWitt Clinton's position on 1-1-1807?
Paraphrase: What position did DeWitt Clinton hold in 1807?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q527462 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P582 ?x filter(contains(YEAR(?x),'1807')) }